Re: [ATM] All Spherical Relay Telescope

[George Anderson <tillerman1@videotron.ca>]

Unless I am mistaken there is no relay lens in the Lurie-Houghton
telescope.
A two piece corrector, the primary mirror, and the secondary mirror. No
relay lens.

George Anderson
Montreal Canada

Clear skies and good health

Ukyo Chen wrote:
> 
> Hi John and other ATMers,
> 
> You can download the US Patent 2,350,112 which is Houghton's design.
> The website for dowload is http://www.uspto.gov/
> Or you can visit my website, I had put the pic to there already:
> http://spaces.msn.com/members/ukyochen888/
> 
> Or if you want, please send a mail to me and I will attach the document to
> you for free.
> 
> Best Regards,
> Ukyo Chen
> 
> >From: John Jarosz <johnjarosz@comcast.net>
> >To: atm@atmlist.net
> >Subject: [ATM] All Spherical Relay Telescope
> >Date: Tue, 06 Sep 2005 22:09:38 -0500
> >
> >Hi all,
> >
> >I'm researching the above and I'm trying to find a copy of the article
> >that is referenced in "Telescope Optics"
> >
> >The article is by RD Sigler and is in Telescope Making vol 2 - winter
> >1978.
> >
> >I thought I scored when a library search said that the Adler Planetarium
> >had a copy, but apparently it is no longer available from them.  If
> >anyone has a copy I would be glad to pay for copying/shipping costs.
> >I'm on the digest, so you can email me directly.
> >
> >Thanks you very much.
> >
> >John jarosz
> >_______________________________________________
> >ATM mailing list http://www.atmlist.net/
> 
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